_WSTATUS
info->si_status = _WSTATUS(pr->ps_xsig);
info->si_status = _WSTATUS(pr->ps_xsig);
#define WIFSIGNALED(x) (_WSTATUS(x) != _WSTOPPED && _WSTATUS(x) != 0)
#define WTERMSIG(x) (_WSTATUS(x))
#define WIFEXITED(x) (_WSTATUS(x) == 0)